| Description | Specifies the top level directory path for the indexes managed by Solr. |
| JNDI Property | java:comp/env/data/dir/root |
| Java System Property | data.dir.root or solr.data.dir.root |
| Environment Variable | SOLR_DATA_DIR_ROOT |
| Default Value | [solr_home] |
These external values can be overridden by the JNDI attributes from java:comp/env, Java System properties, or OS environment variables.
Note that:
- JNDI properties are always lowercase
- Java System properties are always lowercase
- Environment variables are always uppercase
- Property names in the property files are case sensitive